package com.stu.day08.shape;

/**
 * 演示:
 *
 * @author mm
 * @date 2025/1/13 16:36:00
 */
public class Square extends Rect {
    public Square(double len) {
//        int a = 1;
        super(len,len);  // 必须放子类构造的首行
    }
}
